# Postfix develiver fail , no return mail message

**URL:** <https://forums.suse.com/t/postfix-develiver-fail-no-return-mail-message/40763>\
**Category:** SLES Configure-Administer\
**Created:** [May 25, 2023, 12:52am UTC](https://forums.suse.com/t/postfix-develiver-fail-no-return-mail-message/40763 "2023-05-25T00:52:29Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![wenchengkao](https://avatars.discourse-cdn.com/v4/letter/w/bbe5ce/32.png) [@wenchengkao](https://forums.suse.com/u/wenchengkao)\
**Post date:** [May 25, 2023, 12:52am UTC](https://forums.suse.com/t/postfix-develiver-fail-no-return-mail-message/40763/1 "2023-05-25T00:52:29Z")

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Hi All  
I have configure my postfix on SLES15SP4  
it been enable imaps/SMTPs and could send mail to google/O365 using TLS protocol  
it seem work fine.  
but I have a issue to let me confused.  
when a mail with incorrect user address or no such user address.  
postfix send and /var/log/mail show like below

550-5.1.1 The email account that you tried to reach does not exist. Please try 550-5.1.1 double-checking the recipient’s email address for typos or 550-5.1.1 unnecessary spaces. Learn more at 550 5.1.1 [Fix bounced or rejected emails - Gmail Help](http://support.google.com/mail/?p=NoSuchUser) s187-20020a625ec4000000b0064ebd286b56si32819pfb.224 - gsmtp (in reply to RCPT TO command))

but user mailbox seem not receive any return mail or message…  
Is it normal ?? or which postfix or Dovecot configure I need modify to let user receive these mail to know these mail has incorrect message ?

Thanks!!

Wencheng